I meet some problems when test the performance of your LoRa project and I was wondering if you could give me any help.

I have built the project including LoRa Gateway Bridge, LoRa Server and LoRa App Server. I used Locust for a simple test of the project’s performance. In the test, I simulated 100 devices and each device sent a packet about 5 seconds. In addition, each device can use a particular gateway to send and receive packetes. At first, the syetem worked fine. However, But after a few minutes, the downlink packets could not be received at all. I found many info massages: “unsubscribing from topic” from LoRa Gateway Bridge’s journal. I am sure that gateways are still send uplink packets to LoRa Gateway Bridge. Is this a problem?

The journal of LoRa Gateway Bridge is following:

For example: the gateway whose id is 35326b1ebf4ab41f send a uplink packet at 2018-11-29T10:51:31+08:00. However, LoRa Gateway Bridge unsubscribe the topic ‘gateway/35326b1ebf4ab41f/tx’ at 2018-11-29T10:51:40+08:00. The gateway also sent a new uplink packet at 2018-11-29T10:51:43+08:00.